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受欢迎的代数 >

(5xa)(bx^2)=35x^8

解答

(5 x a) (b x^{2}) = 35 x^{8}

解答

x = 0, x = 5 \frac{ab}{7}

求解步骤

(5 x a) (b x^{2}) = 35 x^{8}

将

35 x^{8}

para o lado esquerdo

5 x ab x^{2} - 35 x^{8} = 0

因式分解

5 x ab x^{2} - 35 x^{8} : 5 x^{3} (ab - 7 x^{5})

5 x^{3} (ab - 7 x^{5}) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

x = 0 or ab - 7 x^{5} = 0

解

ab - 7 x^{5} = 0 : x = 5 \frac{ab}{7}

解为

x = 0, x = 5 \frac{ab}{7}

作图

流行的例子

0=θ^1+θ^2+θ^3

0 = θ^{1} + θ^{2} + θ^{3}

x^3-3x^2-9x+5=0

x^{3} - 3 x^{2} - 9 x + 5 = 0

x^{2} (x + 1) = 252

(x-2)(x+9)(x-1)=0

(x - 2) (x + 9) (x - 1) = 0

(x-5)(x^2+x+1)=0

(x - 5) (x^{2} + x + 1) = 0